Hospital-bed



P. H. PIERSON.

HOSPITAL BED. 7 APPLICATION FILED APR-17,1919.

1,359,100. Patented Nov. 16, 1920.

I N V E N TOR PM: IP PIE/P5 011/ A TTORNE Y To all whom it may concern:

PATENT OFFICE.

PHILIP H. PIEBSON, OF SAN FRANCISCO, CALIFORNIA.

HOSPITAL-BED.

Specification of Letters Patent. -Pa,tented Nov. 16 1920 Applicationfiled April 17, 1919. Serial No. 290,689.

Be it known that I, PHILIP H. PinnsoN, a

. citizen of the United States, and a resident of the city and county ofSan Francisco, State of California, have made a new and usefulinventionto wit, Improvement 1n Hospital-Beds; and I do herebydeclarethe following to be a full, clear, concise, and exact description of thesame.

This invention relates to a-new and novel appliance adaptable tohospital beds.

It is well known that in beds used in hospltals, it is often necessaryto raise the body of the patient, and in many instances it. isimpossible to touch the person lying thereon.

The object of this invention is to raise the head of the bed by meanswhich will .be convenient for either the attendant or the person lyingtherein.

Another object is to construct a bed of this character which will befree from complicated parts, and which will be so constructed that itwill not be in the way of the attendant in leaning over the patient.

Another object is to make a bed which will accomplish this purpose andyet be very simple, as all hospital appliances must be as plain aspossible.

In this specification and the annexed drawings, the invention isillustrated in the form considered to be the best, but it is to beunderstood that the invention is not limited to such form, because itmay be embodied in-other forms, and it is also to be understood that inand by the claim following the description, it is desired-to cover theinvention in whatsoever form it may be embodied.

In the accompanying drawings, Figure 1 is a side elevation of myimproved bed.

Fig. 2'is a plan view of the same looking from underneath.

Fig. 3 is a detail view of the hand wheel. The numeral 5 designates theusual foot board, and the numeral 6 the usual head board. These boardsare connected by longitguginal members 7 and 8 common in all e s.

The numeral 9 designates any form of spring stretched between the headand foot boards. Overlying said spring member, I provide substantiallyU-shaped members 10 and 11, which pass under the mattress along thesides thereof, and have their ends terminating in depending curvedsections 12 and 13. These curved sections are hinged as at 14 and 15tothe side rails 7 and 8 of the bed proper. Cross members may beattached to said U-shaped members from onelongi- ,tudinal side to theother passing under the mattress and forming additional supportto thesame. These longitudinal members may be made of fabric or any othersuitable material. Beneath the bed and parallel to the side members arerods 16 and 17 secured in the head and' foot boards, carrying at theirforward ends bevel gears 18 and 19, WhlCh bevel gears mesh with gears 20and 21 of a cross shaft 22, which cross shaft is journaled on the sidemembers 7 and 8. The rear ends of the rods l6 and 17 are screw threadedas at 23 and 24, and carry thereon internally threaded collars 25 and 26to which is attached a cross rod 27. At the outer ends of the rod 27, Iprovide pivoted links 29 and 30 which are connected at their forwardends to the U-shaped'member 11 at 31.

Upon one end of the cross shaft 22, I

attach a gear 32 which meshes with a gear 33 carried by a hand wheel34:. This hand wheel is pivotally mounted so as to rotate and is carriedby one of the frame members. The U-shaped member which passes under thefootof the mattress is provided with a depending U-shaped member 35 hined at 36 and adapted to rest in ratchets 3 provided upon the forward endof each'member 7 and 8., It will now be seen that by this construction Ican raise either end of the bed as necessity arises. 1

Assuming that a patient is lying upon the bed, and desires to raisehimself to the position shown in dotted lines, Fig. 1 and indicated bythe numeral 38, the hand wheel 34 is grasped and rotated which impartsmovement to the cross shaft 22 through the medium of the gear 32. Thisin turn rotates the shafts l6 and 17 through {the bevel gears 18 and 19,20 and 21. As these shafts 16 and 17 are rotated, screw threaded collars25 and 26 are drawn toward the shaft 22. This in turn draws the linkinto the position shown in dotted lines in Fig. 1, thus causing the headsection of the bed and mattress supported thereon to be lifted. The footsection may be lifted by raising the U-shaped frame by hand, and it willstay in such a position through the action of the depending U-shapedmember 35 co-acting with the ratchet member 37.

Having thus described my invention what I claim as new and desire tosecure by Letters Patent of the United States is The combination with abed having head and foot boards connected by side rails, of asubstantially U-shaped frame having its free ends pivotally mounted,respectively, to the side rails at substantially medial points thereof,a shaft extending transversely of the bed and journaled at its ends tosaid side rails at substantially medial points thereof, a pair ofparallel shafts ex tending longitudinally of the bed and each disposedadjacent one of said side rails, at least one of the ends of saidparallel shafts being journaled in one of said boards and meanssupporting the other end portions of said shafts, intermeshing gears onsaid PHILIP H. PIERSON.

In presence of A. J. HENRY.

